from the definition ulcer is the break out of the membrane which cause malfunction of that part so the effect depend on the type of ulcer that you talking about for example ulcer of mouth stomach etc
Peptic Ulcers
Generally, peptic ulcers don't affect the aorta (in a direct way, at least!)
Ulcers typically form in the stomach and the small intestine in the human body.
the intire body
Respiratory system
Ulcers in the tongue are caused by having less vitamins in the body.
they affect the nervous system.
No. In fact, smoking has been shown to have only a small effect on ulcers.
As is progresses, bulimia can affect virtually all of the systems in the body.
central nervous system
nervous system
Steroid affect every system in the body. For instance, they affect the immune system by decreasing inflammation, the reproductive system by changing the balance of hormones, and the stomach by affecting its lining.